Medical supporting cushion



FIG. 1 is a front left perspective view of the medical supporting cushion showing our new design; and,

FIG. 2 is a front elevational view thereof, the rear elevational view being identical thereto.

The dot-dash broken lines represent unclaimed boundaries of the design. The dash-dash broken lines represent unclaimed subject matter and form no part of the claimed design. The stippled surface shading depicts a contrast in appearance relative to non-stippled areas. 

CLAIM The ornamental design for a medical supporting cushion, as shown and described. 